I’ve had my juvenile clownfish for 4 days now and all my test come out at zero with a ph of 8.2 and but the smaller one seems to have some kind of cloudiness on his fins and his tail seems to bo a bit torn although not positive. They are not patches it’s just some clodiness that I noticed on his tail fin and a little on his top fin he still swims around and goes for food and is not gasping for air but does stay in the top part of it. My other slightly larger clownfish is doing fine it’s chases the smaller one around at times. Is this a fungus on my fish that’s is just starting and if so how can I treat it or is it something else I need to worry about. I attached pictures